Expansion of 1/Product_{k>=1} (1 - x^k)^(valuation(k,4) + 1).

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =8a(6) =13a(7) =18a(8) =29a(9) =39a(10) =57a(11) =77a(12) =112a(13) =148a(14) =205a(15) =271a(16) =373a(17) =485a(18) =649a(19) =841a(20) =1116a(21) =1431a(22) =1865a(23) =2379a(24) =3080a(25) =3896a(26) =4979a(27) =6268a(28) =7961a(29) =9953